Built to last, built to installThe LUNA 3.5" is built around a durable airtight fixed aluminum body with an anodized blue heat sink that maximizes airflow around the LED light source — the simplest way to protect light output over time. Two spring-loaded clips let the
recessed downlight attach to virtually any ceiling material, and the separate extruded aluminum hardwire box keeps the driver out of the aperture. An 18" (457 mm) FT6 rated cable with a DC 2.1 connector links driver to fixture and is approved for use in plenums and suspended ceilings, while three "Quick connect" push-in terminals make the wiring part of the job go quickly. Hole cut is Ø 3 5/8" (92 mm); the fixture measures 4 3/8" (111 mm) and 3 3/8" (85 mm), with a 4 3/16" (106 mm) / 3 1/16" (78 mm) profile and a 15/16" (34 mm) hardwire box height.
Light quality and dim-to-warmThe 12 watt LED module maintains uniform intensity and produces up to 600 lumens with a typical
CRI of 90, so colours stay true under the beam. The lens shapes a 38° beam spread — tight enough for accent rows, wide enough for general
LED pot light coverage on standard ceilings. The real charm is the dim-to-warm behaviour: colour temperature shifts from 3000 K down to 2000 K as you dim, turning a bright working kitchen into a candle-warm dining room without changing a single fixture.
Technical specificationsSKU: RA35-12F-35K-90BN
Application: Ceiling Recess Mount
Approved Location: Wet / Insulated Ceilings
Wattage: 12W
Lumens: 600
Lumens per Watt: 57
CCT: 3000 K~2000 K
CRI: 90
Beam Angle: 38°
Input: 100-135V AC, 50/60Hz
Dimming: Yes, TRIAC/ELV
Driver: 300mA dimmable Class II electronic
Power Factor: >0.90
Hole Cut: Ø 3 5/8" (92mm)
Operating Temperature: -20°C~40°C (-4°F~104°F)
Projected Life: 70% @ 33,000 hrs
Certification: cETLus, LM79, LM80
Colour: Brushed Nickel
Warranty: Lifetime
Compatibility and accessoriesThis fixture works with industry standard
TRIAC/ELV dimmers; the manufacturer publishes a compatible dimmer list for the LUNA family. Accessories, sold separately, include the P-3520 3 5/8" round pre-mounting plate and the P-3520NC round new construction plate, both with a driver attachment clip and made for 3½" LUNA LED fixtures, plus the P-NCMK-1 new construction mounting kit with hanger bars, brackets and screws. Reducer rings RA35-XLRING-BK, RA35-XLRING-BN and RA35-XLRING-WH adapt the 3½" LUNA to larger existing openings — handy on retrofits. Vapour barrier extenders VBE-1 (new construction) and VBE-2, VBE-3, VBE-4 (remodel) answer the frequent "recessed lighting vapour barrier" question in Canadian ceilings, and the LC-CRTL-DIM-1 smart Wi-Fi dimmer, 120V, adds app control.
Where it shines and what's documentedBecause it's suitable for wet locations and approved for direct contact with insulation, this
3.5 inch LED downlight fits showers, covered porches, soffits, entryways and insulated attic-side ceilings, as well as condos, offices, clinics, restaurants and retail displays where a small aperture looks best. Mix finishes across a project with the
3.5" Luna LED round recessed fixture RA35-12F-DTW-90BN, or pick a fixed colour temperature such as the
3.5" Luna LED round recessed fixture RA35-12F-27K-90BN or the
3.5" Luna LED round recessed fixture RA35-12F-90BN. The full technical PDF spec sheet is in the Documentation tab for dimensions, the ordering guide and driver options.